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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-08 13:48:45 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-03 00:11:18 +0100 |
| commit | fd313d8cf8368918882b6de0880e44ae25cc7394 (patch) | |
| tree | 5323fa9c9e2e6edf2c8ddcfac202482afdae83a0 | |
| parent | bfea054a75f17d140f2f171056a801c4c89f6d26 (diff) | |
avcodec/ralf: Fix integer overflow in apply_lpc()
Fixes: signed integer overflow: 2147482897 + 2048 cannot be represented in type 'int'
Fixes: 19240/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5743240326414336
Fixes: 19869/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5150136636538880
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ralf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index 5d88b4c943..831728177e 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -330,7 +330,7 @@ static void apply_lpc(RALFContext *ctx, int ch, int length, int bits) acc = (acc + bias - 1) >> ctx->filter_bits; acc = FFMAX(acc, min_clip); } else { - acc = (acc + bias) >> ctx->filter_bits; + acc = ((unsigned)acc + bias) >> ctx->filter_bits; acc = FFMIN(acc, max_clip); } audio[i] += acc; |